Biology 1009 Tenth grade students study the beginning of biology, the attributes of life, and the meaning of science. They study matter, acids, bases, buffers, energy, lipids and proteins. They study differentiation of cells, sexual reproduction, linked genes and traits, incomplete and multiple gene inheritance, and sex linked genes. Students learn about DNA and DNA structure, protein construction, mutations, pedigrees, and the Human Genome Project. Tenth grade students study the foundation of body systems including the nervous system, endocrine system, reproductive system, digestive system, excretory system, and muscular system. They record and analyze observations, conduct calculation, use tables and graphs, apply concepts, formulate hypothesis, and design experiments.